

<!DOCTYPE html>
<html lang="zh-CN" data-default-color-scheme=auto>



<head>
  <meta charset="UTF-8">
  <link rel="apple-touch-icon" sizes="76x76" href="/img/favicon.png">
  <link rel="icon" href="/img/favicon.png">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0, shrink-to-fit=no">
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  
  <meta name="theme-color" content="#2f4154">
  <meta name="author" content="Fly542">
  <meta name="keywords" content="">
  
    <meta name="description" content="rm 删除时报错’Argument list too long’12#替换rm -rf  命令，改用xargs 即可ls | xargs rm -rf   清理 &#x2F;var&#x2F;log&#x2F;journal 下的内容12345# 如何判断占用了多少空间journalctl --disk-usage# 清理目录数据的阈值为500Mjournalctl --vacuum-size&#x3D;500M   ulimit 值超">
<meta property="og:type" content="article">
<meta property="og:title" content="常见问题处理方法">
<meta property="og:url" content="http://fly542.cn/2022/11/10/04DevOps/100%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98%E5%8F%8A%E5%A4%84%E7%90%86/index.html">
<meta property="og:site_name" content="Fly542 技术沉淀">
<meta property="og:description" content="rm 删除时报错’Argument list too long’12#替换rm -rf  命令，改用xargs 即可ls | xargs rm -rf   清理 &#x2F;var&#x2F;log&#x2F;journal 下的内容12345# 如何判断占用了多少空间journalctl --disk-usage# 清理目录数据的阈值为500Mjournalctl --vacuum-size&#x3D;500M   ulimit 值超">
<meta property="og:locale" content="zh_CN">
<meta property="article:published_time" content="2022-11-10T08:40:11.000Z">
<meta property="article:modified_time" content="2024-09-29T01:26:37.911Z">
<meta property="article:author" content="Fly542">
<meta property="article:tag" content="linux">
<meta name="twitter:card" content="summary_large_image">
  
  
  <title>常见问题处理方法 - Fly542 技术沉淀</title>

  <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4/dist/css/bootstrap.min.css" />


  <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/github-markdown-css@4/github-markdown.min.css" />
  <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/hint.css@2/hint.min.css" />

  
    
    
      
      <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/highlight.js@10/styles/github-gist.min.css" />
    
  

  
    <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fancyapps/fancybox@3/dist/jquery.fancybox.min.css" />
  


<!-- 主题依赖的图标库，不要自行修改 -->

<link rel="stylesheet" href="//at.alicdn.com/t/font_1749284_ba1fz6golrf.css">



<link rel="stylesheet" href="//at.alicdn.com/t/font_1736178_lbnruvf0jn.css">


<link  rel="stylesheet" href="/css/main.css" />

<!-- 自定义样式保持在最底部 -->


  <script id="fluid-configs">
    var Fluid = window.Fluid || {};
    var CONFIG = {"hostname":"fly542.cn","root":"/","version":"1.8.14","typing":{"enable":true,"typeSpeed":70,"cursorChar":"_","loop":false},"anchorjs":{"enable":true,"element":"h1,h2,h3,h4,h5,h6","placement":"right","visible":"hover","icon":""},"progressbar":{"enable":true,"height_px":3,"color":"#29d","options":{"showSpinner":false,"trickleSpeed":100}},"copy_btn":true,"image_zoom":{"enable":true,"img_url_replace":["",""]},"toc":{"enable":true,"headingSelector":"h1,h2,h3,h4,h5,h6","collapseDepth":0},"lazyload":{"enable":true,"loading_img":"/img/loading.gif","onlypost":false,"offset_factor":2},"web_analytics":{"enable":false,"baidu":null,"google":null,"gtag":null,"tencent":{"sid":null,"cid":null},"woyaola":null,"cnzz":null,"leancloud":{"app_id":null,"app_key":null,"server_url":null,"path":"window.location.pathname","ignore_local":false}},"search_path":"/local-search.xml"};
  </script>
  <script  src="/js/utils.js" ></script>
  <script  src="/js/color-schema.js" ></script>
<meta name="generator" content="Hexo 6.0.0"></head>


<body>
  <header style="height: 70vh;">
    <nav id="navbar" class="navbar fixed-top  navbar-expand-lg navbar-dark scrolling-navbar">
  <div class="container">
    <a class="navbar-brand" href="/">
      <strong>Fly542 技术沉淀</strong>
    </a>

    <button id="navbar-toggler-btn" class="navbar-toggler" type="button" data-toggle="collapse"
            data-target="#navbarSupportedContent"
            aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
      <div class="animated-icon"><span></span><span></span><span></span></div>
    </button>

    <!-- Collapsible content -->
    <div class="collapse navbar-collapse" id="navbarSupportedContent">
      <ul class="navbar-nav ml-auto text-center">
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/">
                <i class="iconfont icon-home-fill"></i>
                首页
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/archives/">
                <i class="iconfont icon-archive-fill"></i>
                归档
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/categories/">
                <i class="iconfont icon-category-fill"></i>
                分类
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/tags/">
                <i class="iconfont icon-tags-fill"></i>
                标签
              </a>
            </li>
          
        
          
          
          
          
            <li class="nav-item">
              <a class="nav-link" href="/about/">
                <i class="iconfont icon-user-fill"></i>
                关于
              </a>
            </li>
          
        
        
          <li class="nav-item" id="search-btn">
            <a class="nav-link" target="_self" href="javascript:;" data-toggle="modal" data-target="#modalSearch" aria-label="Search">
              &nbsp;<i class="iconfont icon-search"></i>&nbsp;
            </a>
          </li>
        
        
          <li class="nav-item" id="color-toggle-btn">
            <a class="nav-link" target="_self" href="javascript:;" aria-label="Color Toggle">&nbsp;<i
                class="iconfont icon-dark" id="color-toggle-icon"></i>&nbsp;</a>
          </li>
        
      </ul>
    </div>
  </div>
</nav>

    <div class="banner" id="banner" parallax=true
         style="background: url('/img/default.png') no-repeat center center;
           background-size: cover;">
      <div class="full-bg-img">
        <div class="mask flex-center" style="background-color: rgba(0, 0, 0, 0.3)">
          <div class="page-header text-center fade-in-up">
            <span class="h2" id="subtitle" title="常见问题处理方法">
              
            </span>

            
              <div class="mt-3">
  
  
    <span class="post-meta">
      <i class="iconfont icon-date-fill" aria-hidden="true"></i>
      <time datetime="2022-11-10 16:40" pubdate>
        2022年11月10日 下午
      </time>
    </span>
  
</div>

<div class="mt-1">
  
    <span class="post-meta mr-2">
      <i class="iconfont icon-chart"></i>
      910 字
    </span>
  

  
    <span class="post-meta mr-2">
      <i class="iconfont icon-clock-fill"></i>
      
      
      8 分钟
    </span>
  

  
  
</div>

            
          </div>

          
        </div>
      </div>
    </div>
  </header>

  <main>
    
      

<div class="container-fluid nopadding-x">
  <div class="row nomargin-x">
    <div class="d-none d-lg-block col-lg-2"></div>
    <div class="col-lg-8 nopadding-x-md">
      <div class="container nopadding-x-md" id="board-ctn">
        <div class="py-5" id="board">
          <article class="post-content mx-auto">
            <!-- SEO header -->
            <h1 style="display: none">常见问题处理方法</h1>
            
            <div class="markdown-body">
              <h3 id="rm-删除时报错’Argument-list-too-long’"><a href="#rm-删除时报错’Argument-list-too-long’" class="headerlink" title="rm 删除时报错’Argument list too long’"></a>rm 删除时报错’Argument list too long’</h3><figure class="highlight powershell"><table><tr><td class="gutter"><div class="code-wrapper"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></div></td><td class="code"><pre><code class="hljs powershell"><span class="hljs-comment">#替换rm -rf  命令，改用xargs 即可</span><br><span class="hljs-built_in">ls</span> | xargs <span class="hljs-built_in">rm</span> <span class="hljs-literal">-rf</span><br></code></pre></td></tr></table></figure>


<h3 id="清理-var-log-journal-下的内容"><a href="#清理-var-log-journal-下的内容" class="headerlink" title="清理 /var/log/journal 下的内容"></a>清理 /var/log/journal 下的内容</h3><figure class="highlight mipsasm"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><code class="hljs mipsasm"><span class="hljs-comment"># 如何判断占用了多少空间</span><br><span class="hljs-keyword">journalctl </span>--<span class="hljs-keyword">disk-usage</span><br><span class="hljs-keyword"></span><br><span class="hljs-comment"># 清理目录数据的阈值为500M</span><br><span class="hljs-keyword">journalctl </span>--vacuum-size=<span class="hljs-number">500</span>M<br></code></pre></td></tr></table></figure>


<h3 id="ulimit-值超出允许范围导致无法登陆操作系统"><a href="#ulimit-值超出允许范围导致无法登陆操作系统" class="headerlink" title="ulimit 值超出允许范围导致无法登陆操作系统"></a>ulimit 值超出允许范围导致无法登陆操作系统</h3><p>一般在/etc/security/limits.conf文件中设置各种限制值。</p>
<p><font color=red> 但是请注意，如果你在文件中设置，你可能设置的值超出范围，导致不可预知的后果，例如无法登陆操作系统。</font></p>
<p>下面这个对open files的限制就是一个例子，它不识别unlimited，是一个有限的值。<br>所以如果你在/etc/security/limits.conf中设置了</p>
<figure class="highlight asciidoc"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br></pre></td><td class="code"><pre><code class="hljs asciidoc"><span class="hljs-bullet">* </span>soft    nofile  unlimited<br><span class="hljs-bullet">* </span>hard    nofile  unlimited<br></code></pre></td></tr></table></figure>
<p>那就完蛋了，因为你接下来的进程将登陆不了系统了。<br>我们最好先使用ulimit命令验证一下你将要设置的值是否合法。</p>
<figure class="highlight vim"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><code class="hljs vim">[root@root ~]# ulimit -n <span class="hljs-number">1024000000</span><br>-bash: ulimi<span class="hljs-variable">t:</span> <span class="hljs-keyword">open</span> <span class="hljs-keyword">file</span><span class="hljs-variable">s:</span> cannot modify limi<span class="hljs-variable">t:</span> Operation not permitted<br>[root@root ~]# ulimit -n <span class="hljs-number">9999999999</span><br>-bash: ulimi<span class="hljs-variable">t:</span> <span class="hljs-keyword">open</span> <span class="hljs-keyword">file</span><span class="hljs-variable">s:</span> cannot modify limi<span class="hljs-variable">t:</span> Operation not permitted<br>[root@root ~]# ulimit -n <span class="hljs-number">9999999</span><br>-bash: ulimi<span class="hljs-variable">t:</span> <span class="hljs-keyword">open</span> <span class="hljs-keyword">file</span><span class="hljs-variable">s:</span> cannot modify limi<span class="hljs-variable">t:</span> Operation not permitted<br>[root@root ~]# ulimit -n <span class="hljs-number">999999</span><br></code></pre></td></tr></table></figure>

<h3 id="停止当前用户继续向maildrop目录中发送邮件"><a href="#停止当前用户继续向maildrop目录中发送邮件" class="headerlink" title="停止当前用户继续向maildrop目录中发送邮件"></a>停止当前用户继续向maildrop目录中发送邮件</h3><p>在cron的第一行加入 MAILTO=””便可，这样执行当前用户的Cron时，不会发送邮件。</p>
<p>示例:</p>
<figure class="highlight awk"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><code class="hljs awk">[root@mw1 postfix]<span class="hljs-comment"># crontab -e</span><br><br>MAILTO=<span class="hljs-string">&quot;&quot;</span><br><br>*<span class="hljs-regexp">/5 * * * * /</span>opt<span class="hljs-regexp">/soft/</span>a.sh <br></code></pre></td></tr></table></figure>
            </div>
            <hr>
            <div>
              <div class="post-metas mb-3">
                
                  <div class="post-meta mr-3">
                    <i class="iconfont icon-category"></i>
                    
                      <a class="hover-with-bg" href="/categories/devops/">devops</a>
                    
                  </div>
                
                
                  <div class="post-meta">
                    <i class="iconfont icon-tags"></i>
                    
                      <a class="hover-with-bg" href="/tags/linux/">linux</a>
                    
                  </div>
                
              </div>
              
                <p class="note note-warning">
                  
                    本博客所有文章除特别声明外，均采用 <a target="_blank" href="https://creativecommons.org/licenses/by-sa/4.0/deed.zh" rel="nofollow noopener noopener">CC BY-SA 4.0 协议</a> ，转载请注明出处！
                  
                </p>
              
              
                <div class="post-prevnext">
                  <article class="post-prev col-6">
                    
                    
                      <a href="/2022/11/18/03%E8%BD%AF%E4%BB%B6%E5%BC%80%E5%8F%91/03linux/10errno%E8%AF%B4%E6%98%8E/">
                        <i class="iconfont icon-arrowleft"></i>
                        <span class="hidden-mobile">errno说明</span>
                        <span class="visible-mobile">上一篇</span>
                      </a>
                    
                  </article>
                  <article class="post-next col-6">
                    
                    
                      <a href="/2022/11/10/04DevOps/21tcpdump%E5%AE%9E%E7%94%A8%E6%96%B9%E6%B3%95%E6%80%BB%E7%BB%93/">
                        <span class="hidden-mobile">tcpdump实用方法总结</span>
                        <span class="visible-mobile">下一篇</span>
                        <i class="iconfont icon-arrowright"></i>
                      </a>
                    
                  </article>
                </div>
              
            </div>

            
          </article>
        </div>
      </div>
    </div>
    
      <div class="d-none d-lg-block col-lg-2 toc-container" id="toc-ctn">
        <div id="toc">
  <p class="toc-header"><i class="iconfont icon-list"></i>&nbsp;目录</p>
  <div class="toc-body" id="toc-body"></div>
</div>

      </div>
    
  </div>
</div>

<!-- Custom -->


    

    
      <a id="scroll-top-button" aria-label="TOP" href="#" role="button">
        <i class="iconfont icon-arrowup" aria-hidden="true"></i>
      </a>
    

    
      <div class="modal fade" id="modalSearch" tabindex="-1" role="dialog" aria-labelledby="ModalLabel"
     aria-hidden="true">
  <div class="modal-dialog modal-dialog-scrollable modal-lg" role="document">
    <div class="modal-content">
      <div class="modal-header text-center">
        <h4 class="modal-title w-100 font-weight-bold">搜索</h4>
        <button type="button" id="local-search-close" class="close" data-dismiss="modal" aria-label="Close">
          <span aria-hidden="true">&times;</span>
        </button>
      </div>
      <div class="modal-body mx-3">
        <div class="md-form mb-5">
          <input type="text" id="local-search-input" class="form-control validate">
          <label data-error="x" data-success="v"
                 for="local-search-input">关键词</label>
        </div>
        <div class="list-group" id="local-search-result"></div>
      </div>
    </div>
  </div>
</div>
    

    
  </main>

  <footer class="text-center mt-5 py-3">
  <div class="footer-content">
     <a href="https://hexo.io" target="_blank" rel="nofollow noopener"><span>Hexo</span></a> <i class="iconfont icon-love"></i> <a href="https://github.com/fluid-dev/hexo-theme-fluid" target="_blank" rel="nofollow noopener"><span>Fluid</span></a> 
  </div>
  

  

  
</footer>


  <!-- SCRIPTS -->
  
  <script  src="https://cdn.jsdelivr.net/npm/nprogress@0/nprogress.min.js" ></script>
  <link  rel="stylesheet" href="https://cdn.jsdelivr.net/npm/nprogress@0/nprogress.min.css" />

  <script>
    NProgress.configure({"showSpinner":false,"trickleSpeed":100})
    NProgress.start()
    window.addEventListener('load', function() {
      NProgress.done();
    })
  </script>


<script  src="https://cdn.jsdelivr.net/npm/jquery@3/dist/jquery.min.js" ></script>
<script  src="https://cdn.jsdelivr.net/npm/bootstrap@4/dist/js/bootstrap.min.js" ></script>
<script  src="/js/events.js" ></script>
<script  src="/js/plugins.js" ></script>

<!-- Plugins -->


  <script  src="/js/local-search.js" ></script>



  
    <script  src="/js/img-lazyload.js" ></script>
  



  



  
    <script  src="https://cdn.jsdelivr.net/npm/tocbot@4/dist/tocbot.min.js" ></script>
  
  
    <script  src="https://cdn.jsdelivr.net/npm/@fancyapps/fancybox@3/dist/jquery.fancybox.min.js" ></script>
  
  
    <script  src="https://cdn.jsdelivr.net/npm/anchor-js@4/anchor.min.js" ></script>
  
  
    <script defer src="https://cdn.jsdelivr.net/npm/clipboard@2/dist/clipboard.min.js" ></script>
  






  <script  src="https://cdn.jsdelivr.net/npm/typed.js@2/lib/typed.min.js" ></script>
  <script>
    (function (window, document) {
      var typing = Fluid.plugins.typing;
      var title = document.getElementById('subtitle').title;
      
        typing(title);
      
    })(window, document);
  </script>















<!-- 主题的启动项 保持在最底部 -->
<script  src="/js/boot.js" ></script>


</body>
</html>
